sdrangel/include/dsp/threadedsamplesink.h

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3.1 KiB
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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 F4EXB //
// written by Edouard Griffiths //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_THREADEDSAMPLESINK_H
#define INCLUDE_THREADEDSAMPLESINK_H
#include <QMutex>
#include "samplesink.h"
#include "dsp/samplefifo.h"
#include "util/messagequeue.h"
#include "util/export.h"
class SampleSink;
class QThread;
/**
* Because Qt is a piece of shit this class cannot be a nested protected class of ThreadedSampleSink
* So let's make everything public
*/
class ThreadedSampleFifo : public QObject {
Q_OBJECT
public:
ThreadedSampleFifo(SampleSink* sampleSink, std::size_t size = 1<<18);
~ThreadedSampleFifo();
void writeToFifo(SampleVector::const_iterator& begin, SampleVector::const_iterator& end);
SampleSink* m_sampleSink;
SampleFifo m_sampleFifo;
public slots:
void handleFifoData();
};
/**
* This class is a wrapper for SampleSink that runs the SampleSink object in its own thread
*/
class SDRANGEL_API ThreadedSampleSink : public QObject {
Q_OBJECT
public:
ThreadedSampleSink(SampleSink* sampleSink, QObject *parent = 0);
~ThreadedSampleSink();
const SampleSink *getSink() const { return m_sampleSink; }
MessageQueue* getInputMessageQueue() { return m_sampleSink->getInputMessageQueue(); } //!< Return pointer to sample sink's input message queue
MessageQueue* getOutputMessageQueue() { return m_sampleSink->getOutputMessageQueue(); } //!< Return pointer to sample sink's output message queue
void start(); //!< this thread start()
void stop(); //!< this thread exit() and wait()
bool handleSinkMessage(Message& cmd); //!< Send message to sink synchronously
void feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool positiveOnly); //!< Feed sink with samples
QString getSampleSinkObjectName() const;
protected:
QThread *m_thread; //!< The thead object
ThreadedSampleFifo *m_threadedSampleFifo;
SampleSink* m_sampleSink;
};
#endif // INCLUDE_THREADEDSAMPLESINK_H